string(300) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%B7%A5%E4%BD%9C%E5%AD%98%E5%9C%A8%E9%97%AE%E9%A2%98%E7%9A%84%E6%95%B4%E6%94%B9%E6%8E%AA%E6%96%BD%E6%80%8E%E4%B9%88%E5%86%99%E5%95%8A => Failed to connect to 14.18.46.51 port 38206: Connection refused"
工作存在问题的整改措施怎么写啊
